The artificial sand produced by proper machines can be a better substitute to river sand. The sand should be sharp, clean and course. The grains should be of durable material. The grain sizes must be such that it should give minimum voids. The presence of clay and silt retards the setting of the cement and makes the mortar weaker and the walls or the slab leaks and holds dampness.
Only sand manufactured by VSI Crusher is cubical and angular in shape. Sand made by other types of machines is flaky , which is troublesome in working. There is no plasticity in the mortar. Hence the mason are not ready to work with machine made crushed stone sand. For the same reason inferior river sand may be used. Manufacturing sand from jaw crusher, cone crusher, roll crusher often contains high percentage of dust and have flaky.
Process flow chart of artificial sand making plant
The stone material is sent regularly by the vibrating feed to the primary jaw crusher. Then it is sent to the second jaw crusher to be crushed again. The crushed material is sent by the vibrating screen to be separated. The material whose size is suitable for the feed size of the sand making machine can be sent to the sanding making machine. The unsuitable materials should be sent back to the secondary jaw crusher to be crushed again. The crushing material from the sand making machine is sent back to the vibrating screen to be separated. The suitable separated sand which is the final product should be sent to the sand washing machine to be cleaned, and then sent by the belt conveyor. The unsuitable separated sand should be sent back to the sand making machine to be crushed again. The producing line forms two closed cycles. The production line can be changed according to the customer’s requests.